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Chiswell Flood Map
Map of Chiswell (Portland, Dorset) postcodes and their flood risks. Each postcode is assigned a risk of high, medium, low, or very low, and then plotted on a Chiswell flood map. Most Chiswell postcodes are high flood risk, with some medium flood risk postcodes.
Status:
High
Medium
Low
Very Low
IMPORTANT: We have taken a single point within a Chiswell postcode using Open Postcode Geo and identified the flood risk area which that point falls within. There maybe other points within the postcode which fall into a different area, and hence have a different risk level.
Flood maps for other places near Chiswell
| Place | Distance |
|---|---|
| Fortuneswell flood map | 517 m |
| Castletown flood map | 848 m |
| Portland Port flood map | 1.4 km |
| Easton flood map | 1.9 km |
| Weston flood map | 2.2 km |
| Southwell flood map | 3.5 km |
| Southlands flood map | 4.1 km |
| Wyke Regis flood map | 4.2 km |
| Portland Bill flood map | 4.8 km |
| Rodwell flood map | 5.0 km |
Source: Open Flood Risk by Postcode
Licence: Open Government Licence
- Contains OS data © Crown copyright and database right (2026)
- Contains Royal Mail data © Royal Mail copyright and Database right (2026)
- Contains National Statistics data © Crown copyright and database right (2026)
- Data produced by Land Registry © Crown copyright (2026)
- Contains Environment Agency data licensed under the Open Government Licence v3.0
- Everything else © GetTheData Publishing Limited (2026)
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